Apparatus for purifying and recovering metals, &amp;c.



No. 633,568. Patented Sept. 26, |899. W. J. CLAPP.

APPARATUS FOB PUBIFYING AND RECOVEBING METALS, 61.6.

(Applicatinn led Dec. 27, 189B.)

2 Sheets-Sheet 2.

Patented sept. 2s, i899.

W. J. CLAPP.

APPARATUS Fun PURIFYING AND HECDVERING METALS, &c.

(Applention led Dec. 27, 1898.) (No llodel.)

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fuse plaster of paris, lime, whinstone, gran- .ing of slag and cinder tap ores and other UNITED STATES PATENT CEEIcE..

WILLIAM JOHN CLAPP, OF BIRMINGHAM, ENGLAND.

APPARATUS FOR PURIFYING AND RECOYERING METALS, 81,0.

SPECIFICATION formingpart of Letters Patent N o. 633,568, dated September 26, 1899. d Application filed DecemherZ?, 189B. Serial No. 700,418. (No model.)

To ctZZ whom zit may concern:

Be it known that I, WILLIAM JOHN CLAPP, a subject of Queen Victoria of Great Britain and Ireland, residing at 67 Belgrave road, Edgbaston, Birmingham, in the county of Varwick, England, have invented certain new and useful improvements in furnaces and apparatus for the recovery and purifykinds of waste products and for other purposes, (for which I have received Letters Patent in England, No. 13,332, dated June 15, 1898;) and I do hereby declare the following to be atfull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to use the same.

My invention is applicable to various kinds of furnaces-such, for example, as Bessemer, Siemens, and reverberatory, regenerative, or recuperative and annealing furnaces and the like. VI therefore wish it to be understood that when the word furnace is used it applies to any kind of furnace to which my invention is applicable.

My invention consists, essentially, in the improvements in utilization of the waste products from the various furnaces aforesaidsuch, for example, as slag and slagwool-in combination with the refuse of gas-lime, old fire-bricks, re-clay, limestone, marble, re-

ite, flint, and graphite, either separate or in combination with the refuse of slag-wool, on account of the silicate it contains, as well as borax, tungstate of soda, burnt alum, ammonia, chlorid of platinum, salt, or other similar fire or damp prooi' chemicals and glazing materials, as well as various coloring chemicals that may be required, which are used in the manufacture of cement bricks or fire-proof articles or the like.

The nature of my invention will be more clearly understood from the accompanying dra-wings, which illustrate a few only of the examples in which my invention may be applied, the same letters of reference indicating similar parts throughout.

Figure l represents a longitudinal section, 'and Fig. 2 a side elevation, of a reverberatory furnace constructed according to my invention.

A represents the grate of the furnace, B the body, and C the hearth. The furnace is provided with the usual tiring-door E and the furnace-door F. The flue G is connected to the stack I-I and is provided with the usual form of damper I.

J represents a twyer depending from the hopper K, which is supplied with powdered lime or other purifying agents.

L is a superheater arranged to be heated by the fire contained in the box M.

The furnace is heated similar to the ordinary reverberatory or regenerative furnace orin any approved manner. The flame passes from the grate A over the two bridges N N and is kept to the hearth C by means of the steam passing from the twyer J or as many twyers as may be necessary,vwhich delivers with it the lime or other materials or chemicals contained in the hopper K. The action of this jet of highly-superheated steam is not only to keep the flame from the top of the furnace, but tocharge the flame with purifying agents that will assist in removing the deleterious sulfur, phosphorus, and the like.

The object of' the two bridges N N is to assist the flame to draw with great velocity to the interior of the furnace, and the space O between the two bridges forms a receiver for recovery of carbon, lime, and manganese or any other pu rifying agents delivered from the twyers J. The passage of steam to the superheater L is regulated by the lever and valve P. The hopper Q is supplied with suitable purifying agents, such as lime, which are delivered by means of a jet of steam to the grate A through the pipe R, and as many jets as may be necessary are used. The space O is provided with a cleaning-out hole o.

The flame passing through the flue G enters the base of the stack H, which need not be higher than is requisite to carry off the gases, where it is operated on by a spray of superheated steam passing through the coil S.

T is a water spray arranged to operate on the flame from the bottom, and recovers therefrom by-products, such as carbon, sulfur, and the like.

The gases from the furnace are discharged between the steam-spray and the water-spray and are washed by them. The water and IOO solid matter of chemical value fall into a Water-bosh U at the bottom of the stack and are removed in an y approved" manner.

Having fully described my invention, what I Claim, and desire to secure by Letters Patent, is-

rlhe com bination, with a furnace, ofa vessel for holding' a purifying.,r agent such as powdered lime, a steam-pipe for blowing,` the said agent. into the heating-chamber of the furnace, means for superheating the steam in the said pipe, a stack receiving the gases from the said heating-chamber, a Water-bosh in the base 'of the stack, a spray-pipe for Water projecting upwardly into the Said stack, and a spray-pipe for steam projecting downwardly in the said stack, the said gases from the furnace beingr admitted to the stack between the two said sp1ay-pipes,substantially as set forth.

In Witness whereof I have hereunto set my 2o hand in the presence of two Witnesses. l

WILLIAM JOHN CLAPP. Vitnesses:

WILLIAM H. BARACLOUGH, HEBER EDWIN HOWARD. 

